CN202679707U - Power management realization circuit of LED road signboard - Google Patents
Power management realization circuit of LED road signboard Download PDFInfo
- Publication number
- CN202679707U CN202679707U CN2012200742101U CN201220074210U CN202679707U CN 202679707 U CN202679707 U CN 202679707U CN 2012200742101 U CN2012200742101 U CN 2012200742101U CN 201220074210 U CN201220074210 U CN 201220074210U CN 202679707 U CN202679707 U CN 202679707U
- Authority
- CN
- China
- Prior art keywords
- circuit
- power management
- led
- cell voltage
- battery
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a power management realization circuit of an LED road signboard. The power management realization circuit converts analog light intensity signals into digital signals which can be identified by a microprocessor through carrying out digital sampling on analog light intensity and battery voltage, calculates the remaining power of the battery according to the current condition of the battery voltage, and controls an LED light emitting component to switch on or off precisely by combining with the degree of external light intensity. When the external light is insufficient and the signboard is required to indicate with emitting light, the power management realization circuit can carry out PWM brightness control on the LED light emitting component according to the electric quantity of the battery so as to be able to realize power management control conveniently. The power management realization circuit can realize the optimization of power system management of the LED road signboard, the maximization of the time of LED indicating work and the maximization of effective utilization rate of the battery energy under various external light conditions, and over charge and over discharge protection of the battery, thereby realizing the maximization of the service life of the battery.
Description
Technical field
The utility model relates to the traffic control field of road traffic, and the power management that is specifically related to a kind of LED road sign is realized circuit.
Background technology
The implementation method of the power-supply management system of existing LED road sign is by analog circuit photosensitive perception to be inputted, and has calculated the double threshold comparison circuit of the analog component parameter realization of circuit by circuit design period and whether has controlled the work of LED luminous component to realize easy power management function.Existing electric power management circuit is realized because be the implementation of pure simulation, therefore has the following shortcoming:
A) opening and closing of electric power management circuit are to rely on respectively the Lower Threshold of comparison circuit and Upper threshold to realize, so the Lower Threshold of comparison circuit need to pass through potentiometer manual adjustment, the bad control of point of adjustment.
B) because the LED road sign is operated in the open-air atmosphere of road, light conditions more complicated on the road surface and changeable, the double threshold comparator of analog circuit is subjected to the interference of surround lighting and street lamp light and car bulb easily, beats thereby produce easily, makes the power-supply management system job insecurity.
C) LED of road sign output is the mode of binaryzation, namely as long as open and close two states, the management of power supply is brought very large inconvenience.
The utility model content
The utility model addresses the above problem the power management that a kind of LED road sign is provided and realizes circuit, double threshold control strategy for the traditional analog comparison circuit, the present invention adopts the intelligent digital algorithm, pass through the artificial intelligence recognition technology by software, computing identification is carried out in the input of digital environmental light intensity, can well be eliminated the surround lighting saltus step to the interference saltus step of LED road sign system.
For addressing the above problem, the utility model is realized by following scheme: a kind of power management of LED road sign is realized circuit, this circuit comprises the MCU single-chip microcomputer, cell voltage, charging circuit, LED lamp group, the LED road sign, power supply and control circuit, light-operated and reset circuit, described MCU single-chip microcomputer connects cell voltage and LED lamp group by power circuit, described cell voltage connects charging circuit and LED lamp group by power circuit, the digital signal of this circuit by becoming microprocessor to identify to simulation light intensity signal transition, the dump energy that calculates cell voltage by the MCU single-chip microcomputer carries out the PWM brilliance control, realizes power management control.
Described charging circuit provides power supply for cell voltage, by the unlatching of MCU Single-chip Controlling or charge closing circuit cell voltage is charged.
Described MCU single-chip microcomputer is in conjunction with the strong and weak grade of outside light intensity, by the electric weight coupling PWM brilliance control of cell voltage.
Be connected with photo resistance on the described light-operated and reset circuit.
The utility model can be realized the power-supply system optimised management of LED road sign on namely can function; be implemented in the time maximization of the various outside illumination condition LED of elder generation indication work, the effective rate of utilization maximization that battery power is used, the super-charge super-discharge protection of realization battery, thereby realize maximise battery life.The complexity of the production debugging aspect simplification Analog Circuit Design of equipment can largely improve again reliability and the useful life of LED road sign power-supply system work, also can reduce simultaneously the work workload of device fabrication and debugging.
Below be in conjunction with embodiment and description of drawings the utility model to be further described:
Description of drawings
Fig. 1 is the utility model structural circuit block diagram;
Fig. 2 is the utility model control flow chart;
Fig. 3 is the utility model circuit theory diagrams.
Embodiment
As shown in Figure 1, a kind of power management of LED road sign is realized circuit, this circuit comprises the MCU single-chip microcomputer, cell voltage, charging circuit, LED lamp group, the LED road sign, described MCU single-chip microcomputer connects cell voltage and LED lamp group by power circuit, described cell voltage connects charging circuit and LED lamp group by power circuit, the digital signal of this circuit by becoming microprocessor to identify to simulation light intensity signal transition, the luminous component that the dump energy that calculates cell voltage by the MCU single-chip microcomputer carries out LED lamp group carries out the PWM brilliance control, the control of realization power management, charging circuit provides power supply for cell voltage, by the unlatching of MCU Single-chip Controlling or charge closing circuit cell voltage is charged, the MCU single-chip microcomputer is in conjunction with the strong and weak grade of outside light intensity, and the electric weight by cell voltage carries out the LED luminous component and mates the PWM brilliance control.
When the cell voltage electric weight was not enough, the MCU single-chip microcomputer was changed by AD, and the MCU s operation control is opened charging circuit solar energy battery is charged.
Whether light intensity is interfered a little less than the environmental light intensity, if so, and by MCU s operation control coupling PWM control LED output.
Such as Fig. 2, shown in Figure 3, by resistance R 1, R2, the bleeder circuit that consists of, the voltage that battery produces carries out dividing potential drop at R1, R2, calculates internal cell voltage by the dividing potential drop ratio, when power voltage insufficient, opens charging control triode Q1.
Bleeder circuit by resistance R 6, R7, RL1 (photo resistance), R10 formation, when environmental light intensity changes, the resistance of RL1 can change, light intensity is stronger, the resistance of RL1 is less, then the RL1 resistance is larger on the contrary, therefore namely reacts the light intensity of external environment condition at R7 upper end sampled voltage by the AD conversion.
P2.0P2.1 by MCU U2 lights the LED group by driving with door U3 control triode Q2 out-put supply.
Method and software: after by MCU the voltage data of R1 upper end being carried out the AD sampling, the battery electric quantity of storing in the matcher and voltage curve data can calculate current battery dump energy; After by MCU the voltage data of R7 upper end being carried out the AD sampling, can pass through software approach processing and identification environment nowadays light intensity; By the Intelligent Recognition of outside light intensity and the estimation of battery dump energy, carry out PWM control by algorithm synthesis control LED output brightness, thereby assurance LED direction board is indicated the electric quantity consumption of work and effective control battery for a long time.
Claims (4)
1. the power management of a LED road sign is realized circuit, it is characterized in that: this circuit comprises the MCU single-chip microcomputer, cell voltage, charging circuit, LED lamp group, the LED road sign, power supply and control circuit, light-operated and reset circuit, described MCU single-chip microcomputer connects cell voltage and LED lamp group by power circuit, described cell voltage connects charging circuit and LED lamp group by power circuit, the digital signal of this circuit by becoming microprocessor to identify to simulation light intensity signal transition, the dump energy that calculates cell voltage by the MCU single-chip microcomputer carries out the PWM brilliance control, realizes power management control.
2. the power management of LED road sign according to claim 1 is realized circuit, and it is characterized in that: described charging circuit provides power supply for cell voltage, by the unlatching of MCU Single-chip Controlling or charge closing circuit cell voltage is charged.
3. the power management of LED road sign according to claim 1 is realized circuit, it is characterized in that: described MCU single-chip microcomputer is in conjunction with the strong and weak grade of outside light intensity, by the electric weight coupling PWM brilliance control of cell voltage.
4. the power management of LED road sign according to claim 1 is realized it is characterized in that circuit: be connected with photo resistance on the described light-operated and reset circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200742101U CN202679707U (en) | 2012-03-01 | 2012-03-01 | Power management realization circuit of LED road signboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200742101U CN202679707U (en) | 2012-03-01 | 2012-03-01 | Power management realization circuit of LED road signboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202679707U true CN202679707U (en) | 2013-01-16 |
Family
ID=47500574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200742101U Expired - Fee Related CN202679707U (en) | 2012-03-01 | 2012-03-01 | Power management realization circuit of LED road signboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202679707U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103415122A (en) * | 2013-08-28 | 2013-11-27 | 深圳市林润实业有限公司 | Intelligent energy-saving LED traffic signal lamp processing system |
| CN105187222A (en) * | 2015-09-28 | 2015-12-23 | 李忠训 | Intelligent management system for advertising identification device and control method thereof |
-
2012
- 2012-03-01 CN CN2012200742101U patent/CN202679707U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103415122A (en) * | 2013-08-28 | 2013-11-27 | 深圳市林润实业有限公司 | Intelligent energy-saving LED traffic signal lamp processing system |
| CN105187222A (en) * | 2015-09-28 | 2015-12-23 | 李忠训 | Intelligent management system for advertising identification device and control method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101459997B (en) | Wind light complementary road lamp intelligent controller having adaptive adjustment capability | |
| CN103889122B (en) | A kind of control system of solar street light | |
| CN202769518U (en) | Solar light-emitting diode (LED) lamp | |
| CN209072766U (en) | A kind of the LED Solar Light lighting circuit | |
| CN201499354U (en) | Light-adjusting control device for LED streetlamp | |
| CN202435685U (en) | Solar LED (light emitting diode) street lamp monitoring system | |
| CN201561358U (en) | Solar photoelectric lighting system with intelligent control | |
| CN202679707U (en) | Power management realization circuit of LED road signboard | |
| CN202385352U (en) | Solar lamp controller with integrated constant current source | |
| CN203573497U (en) | Solar LED traffic signal lamp circuit capable of realizing automatic brightness adjustment | |
| CN206212346U (en) | A kind of solar energy type LED street lamp brightness intelligent regulating system | |
| CN204901621U (en) | Solar energy, complementary intelligent LED aviation obstruction beacon of commercial power | |
| CN203748069U (en) | Power management circuit of novel LED road indicating board | |
| CN203036536U (en) | Intelligent solar street lamp | |
| CN203934030U (en) | Energy-saving traffic signal lamp control system | |
| CN204948425U (en) | Based on the intelligent illuminating system of radio communication | |
| CN201742597U (en) | Anti-lightning type LED lighting remote intelligent control driving power supply | |
| CN204992677U (en) | Pulse width adjusts PWM constant current lithium cell all -in -one that steps up | |
| CN203747472U (en) | Power management implementing circuit for LED spike indicator | |
| CN203413523U (en) | Novel solar LED street lamp system | |
| CN203193949U (en) | Street lamp lighting intelligent control system | |
| CN207475946U (en) | A kind of control system of solar energy street lamp of light control functionality | |
| CN201336754Y (en) | Intelligent controller of wind-solar hybrid street lamp capable of self-adaption | |
| CN205196030U (en) | Microwave controlling means | |
| CN204887583U (en) | Intelligent LED street lamp energy -saving control ware |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130116 Termination date: 20210301 |